One very big very bright white-blue ball of light in sky...Doing my 5-am calving cow check, seen very big bright white-blue ball of light off to the SE, in direction of Fort Benton...way too big to be star or planet. Got son out of bed to come see...got spotting scope, looked at the ball of bright light and seen it was actually a cluster of smaller lights making up the single ball of light...it bounced around slightly, but no sound...after 20+ min we went inside.